T49 is a non-billable/non-specific diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugs.
Includes
Poisoning by, adverse effect of and underdosing of glucocorticoids, topically used
Seventh character note
The appropriate 7th character is to be added to each code from category T49
Seventh character extensions
A: initial encounter
D: subsequent encounter
S: sequela
Codes
T49.0
Poisoning by, adverse effect of and underdosing of local antifungal, anti-infective and anti-inflammatory drugs
T49.1
Poisoning by, adverse effect of and underdosing of antipruritics
T49.2
Poisoning by, adverse effect of and underdosing of local astringents and local detergents
T49.3
Poisoning by, adverse effect of and underdosing of emollients, demulcents and protectants
T49.4
Poisoning by, adverse effect of and underdosing of keratolytics, keratoplastics, and other hair treatment drugs and preparations
T49.5
Poisoning by, adverse effect of and underdosing of ophthalmological drugs and preparations
T49.6
Poisoning by, adverse effect of and underdosing of otorhinolaryngological drugs and preparations
T49.7
Poisoning by, adverse effect of and underdosing of dental drugs, topically applied
T49.8
Poisoning by, adverse effect of and underdosing of other topical agents
T49.9
Poisoning by, adverse effect of and underdosing of unspecified topical agent
Versions
2025
No changes
2024
No changes
2023
No changes
2022
No changes
2021
No changes
2020
No changes
2019
No changes
2018
No changes
2017
No changes
2016
New code